This site contains a huge number of lessons, complete with texts, vocabulary, audio, exercises and much more. And it's all free. Note that if you want to get the intermediate and advanced material,... Read more.

collections.uiowa.edu

This site is best described as a Chinese version of Quora, so in other words a site where people ask and answer questions (and discuss other people's questions and answers). Read more.

zhihu.com

Word Reference offers several good forums for discussing languages and this is the Chinese section. It's perhaps not as active as Chinese Forums and I don't follow this forum regularly, so I don't... Read more.

forum.wordreference.com

As the name implies, Chinese Tools is mostly about tools for learners and teachers, but they also have 40 lessons for beginner students of Chinese. This is not reading practice in the sense of most... Read more.

chinese-tools.com

Forumosa is a major online forum where you can discuss anything regarding Taiwan, including living there, learning Chinese, finding friends, jobs or language exchange partners and much more. There'... Read more.

forumosa.com

Mastering Chinese characters, whether you find them enchantingly beautiful or overwhelmingly complex, is essential for literacy in Chinese. Outlier Linguistics will help you understand how the Chin... Read more.

outlier-linguistics.com

ChineseMe is the most integrated Mandarin course, designed for motivated learners who have decided to become fluent. It is an interactive textbook that adapts itself to your interests. The course i... Read more.

chinese-me.com